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tik pot dgn sumb x , y = 0
x² - 4x + 3 = 0
(x- 3)(x -1) =0
x = 3 atau x = 1
batas integral x = 1 sd x = 3
V = π ₐᵇ∫ y² dx
V = π ₁³∫ (x²- 4 + 3)² dx
V = π ₁³∫ (x⁴-8x³ + 22x² - 24x + 9) dx
V = π [ 1/5 x⁵ - 2x⁴ + 22/3 x³ - 12x² + 9x ]³₁
V = π [ 1/5(242) -2(80) + 22/3(26) - 12(8) + 9(2)]
V = 16/15 π
V = 1¹/₁₅ π